<template>
	<div class="login-container">
		<el-form :model="loginForm" :rules="loginRules" auto-complete="on" class="login-form" label-position="left" ref="loginForm">

			<div class="title-container">
				<h3 class="title">
					{{ $t('login.title') }}
				</h3>
			</div>

			<el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user"/>
        </span>
				<el-input
					auto-complete="on"
					name="username"
					placeholder="账号"
					ref="username"
					type="text"
					v-model="loginForm.username"
				/>
			</el-form-item>

			<el-tooltip content="Caps lock is On" manual placement="right" v-model="capsTooltip">
				<el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password"/>
          </span>
					<el-input
						:key="passwordType"
						:type="passwordType"
						@blur="capsTooltip = false"
						@keyup.enter.native="handleLogin"
						@keyup.native="checkCapslock"
						auto-complete="on"
						name="password"
						placeholder="密码"
						ref="password"
						v-model="loginForm.password"
					/>
					<span @click="showPwd" class="show-pwd">
            <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"/>
          </span>
				</el-form-item>
			</el-tooltip>

			<el-button :loading="loading" @click.native.prevent="handleLogin" style="width:100%;margin-bottom:30px;" type="primary">
				{{ $t('login.logIn') }}
			</el-button>

			<div style="position:relative;display:none">
				<div class="tips">
					<span>{{ $t('login.username') }} : admin</span>
					<span>{{ $t('login.password') }} : {{ $t('login.any') }}</span>
				</div>
				<div class="tips">
          <span style="margin-right:18px;">
            {{ $t('login.username') }} : editor
          </span>
					<span>{{ $t('login.password') }} : {{ $t('login.any') }}</span>
				</div>

				<el-button @click="showDialog=true" class="thirdparty-button" type="primary">
					{{ $t('login.thirdparty') }}
				</el-button>
			</div>
		</el-form>

		<el-dialog :title="$t('login.thirdparty')" :visible.sync="showDialog">
			{{ $t('login.thirdpartyTips') }}
			<br>
			<br>
			<br>
			<social-sign/>
		</el-dialog>
	</div>
</template>

<script>
	import {validUsername} from '@/utils/validate'
	import SocialSign from './socialSignin'

	export default {
		name      : 'Login',
		components: {SocialSign},
		data() {
			const validateUsername = (rule, value, callback) => {
				if (!validUsername(value)) {
					callback(new Error('Please enter the correct user name'))
				} else {
					callback()
				}
			}
			const validatePassword = (rule, value, callback) => {
				if (value.length < 6) {
					callback(new Error('The password can not be less than 6 digits'))
				} else {
					callback()
				}
			}
			return {
				loginForm   : {
					username: 'admin',
					password: '123456'
				},
				loginRules  : {
					username: [{required: true, trigger: 'blur', validator: validateUsername}],
					password: [{required: true, trigger: 'blur', validator: validatePassword}]
				},
				passwordType: 'password',
				capsTooltip : false,
				loading     : false,
				showDialog  : false,
				redirect    : undefined
			}
		},
		watch     : {
			$route: {
				handler  : function (route) {
					this.redirect = route.query && route.query.redirect
				},
				immediate: true
			}
		},
		created() {
			// window.addEventListener('storage', this.afterQRScan)
		},
		mounted() {
			if (this.loginForm.username === '') {
				this.$refs.username.focus()
			} else if (this.loginForm.password === '') {
				this.$refs.password.focus()
			}
		},
		destroyed() {
			// window.removeEventListener('storage', this.afterQRScan)
		},
		methods   : {
			checkCapslock({shiftKey, key} = {}) {
				if (key && key.length === 1) {
					if (shiftKey && (key >= 'a' && key <= 'z') || !shiftKey && (key >= 'A' && key <= 'Z')) {
						this.capsTooltip = true
					} else {
						this.capsTooltip = false
					}
				}
				if (key === 'CapsLock' && this.capsTooltip === true) {
					this.capsTooltip = false
				}
			},
			showPwd() {
				if (this.passwordType === 'password') {
					this.passwordType = ''
				} else {
					this.passwordType = 'password'
				}
				this.$nextTick(() => {
					this.$refs.password.focus()
				})
			},
			handleLogin() {
				this.$refs.loginForm.validate(valid => {
					if (valid) {
						this.loading = true
						this.$store.dispatch('user/login', this.loginForm)
							.then(() => {
								this.$router.push({path: this.redirect || '/'})
								this.loading = false
							})
							.catch(() => {
								this.loading = false
								this.$router.push({path: this.redirect || '/'})
							})
					} else {
						console.log('error submit!!')
						return false
					}
				})
			}
			// afterQRScan() {
			//   if (e.key === 'x-admin-oauth-code') {
			//     const code = getQueryObject(e.newValue)
			//     const codeMap = {
			//       wechat: 'code',
			//       tencent: 'code'
			//     }
			//     const type = codeMap[this.auth_type]
			//     const codeName = code[type]
			//     if (codeName) {
			//       this.$store.dispatch('LoginByThirdparty', codeName).then(() => {
			//         this.$router.push({ path: this.redirect || '/' })
			//       })
			//     } else {
			//       alert('第三方登录失败')
			//     }
			//   }
			// }
		}
	}
</script>

<style lang="scss">
	/* 修复input 背景不协调 和光标变色 */
	/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */
	$bg: #283443;
	$light_gray: #fff;
	$cursor: #fff;
	@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
		.login-container .el-input input {
			color: $cursor;
		}
	}
	/* reset element-ui css */
	.login-container {
		.el-input {
			display: inline-block;
			height: 47px;
			width: 85%;
			input {
				background: transparent;
				border: 0px;
				-webkit-appearance: none;
				border-radius: 0px;
				padding: 12px 5px 12px 15px;
				color: $light_gray;
				height: 47px;
				caret-color: $cursor;
				&:-webkit-autofill {
					box-shadow: 0 0 0px 1000px $bg inset !important;
					-webkit-text-fill-color: $cursor !important;
				}
			}
		}
		.el-form-item {
			border: 1px solid rgba(255, 255, 255, 0.1);
			background: rgba(0, 0, 0, 0.1);
			border-radius: 5px;
			color: #454545;
		}
	}
</style>

<style lang="scss" scoped>
	$bg: #2d3a4b;
	$dark_gray: #889aa4;
	$light_gray: #eee;
	.login-container {
		min-height: 100%;
		width: 100%;
		background-color: $bg;
		overflow: hidden;
		.login-form {
			position: relative;
			width: 520px;
			max-width: 100%;
			padding: 160px 35px 0;
			margin: 0 auto;
			overflow: hidden;
		}
		.tips {
			font-size: 14px;
			color: #fff;
			margin-bottom: 10px;
			span {
				&:first-of-type {
					margin-right: 16px;
				}
			}
		}
		.svg-container {
			padding: 6px 5px 6px 15px;
			color: $dark_gray;
			vertical-align: middle;
			width: 30px;
			display: inline-block;
		}
		.title-container {
			position: relative;
			.title {
				font-size: 26px;
				color: $light_gray;
				margin: 0px auto 40px auto;
				text-align: center;
				font-weight: bold;
			}
			.set-language {
				color: #fff;
				position: absolute;
				top: 3px;
				font-size: 18px;
				right: 0px;
				cursor: pointer;
			}
		}
		.show-pwd {
			position: absolute;
			right: 10px;
			top: 7px;
			font-size: 16px;
			color: $dark_gray;
			cursor: pointer;
			user-select: none;
		}
		.thirdparty-button {
			position: absolute;
			right: 0;
			bottom: 6px;
		}
		@media only screen and (max-width: 470px) {
			.thirdparty-button {
				display: none;
			}
		}
	}
</style>
